--- a/boost/config/compiler/visualc.hpp       2015-12-08 11:55:19 -0700
+++ b/boost/config/compiler/visualc.hpp    2018-03-17 10:29:52 -0600
@@ -287,12 +287,3 @@
 #  define BOOST_COMPILER "Microsoft Visual C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
 #endif

-//
-// last known and checked version is 19.00.23026 (VC++ 2015 RTM):
-#if (_MSC_VER > 1900)
-#  if defined(BOOST_ASSERT_CONFIG)
-#     error "Unknown compiler version - please run the configure tests and report the results"
-#  else
-#     pragma message("Unknown compiler version - please run the configure tests and report the results")
-#  endif
-#endif